Pneumatic-tire protector.



T. (5. OCKLEY. PNEUMATIC TIRE PROTECTOR.

APPLICATION FILED NOV-3, 1916,

1 ,284,757. Patented Nov. 12, 1918.

Fig. 4 Fig. 5

Wit Z5' I Invepl'or THOMAS o. OCKLEY, or KINGSTON, ONTARIO, CANADA.

PNEUMATIC-TIRE PROTECTOR.

Specification of Letters Patent.

Patented N (W. 12, 1918.

' Application filed November 3, 1916. Serial No. 129,391.

To all whom it may concern:

Be it known that I, THOMAS G. OOKLEY, a citizen of Canada, residing atKingston, 1n

the county of Frontenac, Province of On-' tario, Canada, have inventednew and useful Improvements in Pneumatic-Tire Frotectors, of which thefollowing is a specification.

My invention relates to protectors for the inner tubes of pneumatictires and has for its object the provision of a device of this characterwhich will positively protect the tire tube from punctures due topenetrating substances.

Another object of myinvention is the provision of a device which willadapt itself to the ordinary tire structure without necessitatin anychange in the construction thereo My invention lies in aprot'ectorformed,

of resilient material preferably metal, adapted to be inserted betweenthe casing and the air tube and means for holding the same againstcreeping around the tire and for preventing any chafing of the tube andcasing while allowing of a slight relative movement between the meetingends of the protector, to insure a perfect fit at all times between theprotector and the tire.

In the drawing forming part ,of the specification Figure l is a planView of the inner portion of my protector before being bent to shape. I

Fig. 2 is a plan view of the outer portion of the same also before it isbent to shape.

Fig. 3 shows the mode of forming the joint of the meeting ends of therotector the same form of joint being provi ed in both the inner and theouter portions.

Fig. 4 is a diagrammatic representation of a tube with the inner portionof the protector in position thereon.

Fig. 5 is a diagrammatic representation of the tube with both portionsof the protector in place.

Referrin to the drawings 1 isa strip ofsheet meta of the desiredresiliency bent to embrace the circumference ofthe tread portion of theinner tube. One end of said strip is made narrower as at A and the otherend is provided with flanges 2 extending toward the axis of the strip.These flanges any undue ru are adapted to engage the reduced end of thestrip to hold the two ends against lateral displacement while allowing asliding movement between the same. circumference of strip 1 there isprovided a series of spurs .3 struck out from the metal and thereforeintegral with the strip.

The above constitutes what I have referred to as the inner tector.

The outer portion consists of a strip .of

portion of my pro- .sheet metal similar to the inner strip one end beingreduced in width as at A and the other carrying flanges 2 thus far ,theconstruction being identical to the inner portion, the strip 1 isprovided with a series of holes 6 corresponding in. position to the"spurs 3 of strip 1.

In order to prevent these metal strips from injurin the air tube and toprevent Ibing of the parts against one another I have provided frictionstrips 4 and 4 of rubber or leather which I secure one each to the innerface of each metal strip. Thesestrips are held in position by means ofrivets 5 and 5.

Upon the outer In assemblin my protector upon atire the strip 1 is placeupon the tube, and the strip 1 placed over said strip 1, the spurs ofthe first strip passing through the holes of the second or outer strip.These spurs are provided long enough to protrude through the outerportion and penetrate into the fabric of the tire casing therebypreventing the protector from being displaced. Having fully described myinvention what I claim is In a tire protector an inner portion fittingover the air tube having meansfor holding its ends in sliding engagementand spurs thereon said spurs extending outwardly, an

outer portion fitting over the said Inner portion also having its endsheld in sliding engagement and openings in said portion adapted toreceive the spurs of the inner portion each portion being lined withfriction strips and the spurs being of such a len th as to penetrateinto the tlre casing.

S igned at Kingston, county of Frontenac, Province of Ontario, this 31stday of October, 1916.

THOMAS G. OCKLEY.

